TM 5-4310-393-14
4-13.3. FUEL INJECTOR.
This task covers: A. Remove B. Test C. Install
Tools:
Materials/Parts:
Tool Kit, General Mechanic's Set
Diesel Fuel (NSN 9140-00-286-5294)
Torque Wrench
Grease (NSN 9150-00-754-2760
Shop Equipment, Automotive
Joint Washers (P/N 40003100)
Maintenance and Repair
Equipment Conditions:
Testing Device 60462800
Fuel Pressure Line Removed)
Torque Wrench
A.
Remove.
1.
Removing the Injector.
CAUTION
The
fuel
injection
system
is
extremely intricate and complex. All
possible care should be taken in the
removal,
inspection,
testing,
and
reassembly of these components.
While handling the fuel injector, be
careful not to touch the nozzle or the
pin assembly on the nozzle end.
Figure 4-4. Fuel Injector
a.
Remove the injector (Figure 4-4, Item 1) from the cylinder head.
b.
Remove seal washer (2) and discard.
B.
Test.
1.
Conducting Test of the Injector.
a.
Visually inspect injector
(1)
for
scoring or burning. inspect to see if injector is bent,
cracked, or damaged.
NOTE
Loosen
the
pressure
gauge
connection and crank the engine
until trapped air is removed from the
system.
Figure 4-5. Injector Test Setup
b. Connect testing device 60462800 (Figure 4-5, Item 3) to injector pump (4) and injector (1). Ensure side connection (2)
is tightly capped.
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